Gearing for oil-well rigs



Oct. 13, 1927.

w. F. RESCHKE' GEARING FOR 01;. WELL RIGS Filed Aug. 15, 1924 Willi. qm E Reschke Patented Oct. 18, 1927.

UNITED STATES \VILLIAM E. BESOHKE,

or VVIGHITA, KANSAS.

GEARING FOE OIL-WELL RIGS.

Application filedAugust 15, 1924. Serial No. 732,329.

My invention relates to a gear connectinga gear to the crank ofan oil well rig.

The object. of my invention is to provide an attachment to connect to a standard make of crank employed in oil well drilling and pumping.

A further object of my invention is to provide a mechanism that can be centered on the crank shaft and fastened firmly to the present crank, and conform to the vary ing thicknes of the crank.-

Referring to the drawings, Fig. 1 is a face view of the mechanism. 2 is a top view showing the position on the crank shaft. Fig. 3 is a cross section of the device. Fig. 4 is a back view. Fig. 5 is the key/for wedgin g the mechanism to one type of crank. Fig. 6 is an edge view of the key. 7 is an end view of Fig. 5. Fig. 8 is a strap for another type of crank. Fig. 9 is an enlarged view of the lock member for the keys, having both ends bent as when engaging with the key.

The mechanism above referred to and J hereinafter more fully described, relates to that objection I have devised a mechanism that will connect a gear substantially to the crank, and in alignment with the shaft; and in view of varying shapes and thickness of the cranks which are manufactured by different companies, I have devised connecting means to comply therewith. I

, By the arrangement set forth and claimed in this application it will notbe required to remove the present crank from the shaft. nor any cutting fitting. whatsoever of the crank or shaft.

The cranks as manufactured and adopted for oil well drilling and pumping are firmly attached to the shaft and difficult to remove, and should the crank be removed to apply a gear direct to the shaft, I have found it necessary to replace the crank for certain kinds of work required. This requires much time and it is also difficult to replace the crank as firmly as it was originally; and to obviate these difficulties I have provided a block 1, adapted to fasten securely to the present crank, the said block having a leg 2, with reinforcing ribs 3 to function as strengthening meansyand also integral thereto are hooks 4, one being on each side and in axial alignment of the gear, 5 is a receptacle for lubricating oil; and the said receptacle may be filled by removing the plug 6. 7 is a bolt hole, which registers with the crank pin hole that is nearest the shaft and thishole as a. rule is accurately spaced a certain distance from the centerof the shaft, and the other pin holes I have found to vary in their spacing to the extent that it was necessary to provide an elongated bolt hole 8 to insure registration with the hole through the-crank; the said hooks have a plurality of ribs A, integralthereto and interposed. between said ribsare eyes B, the said eyes adapted to receive bolts for the purpose hereinafter described. 9 is a gear wheel mounted on said block and securely fastened thereto by means of studs-10, said studs being closely fittedin holes through the web of gear and threaded into the block as shown in Fig. 3.

I do not confine the gear to be made sepa rate from the block as it maybe integral thereto, but preferably and for convenience of repairs, I have made the gear detachable. 11 is a studded spindle which screws firmly in the center of the gear and the opposite end being threaded to receive a collar 12, said collar having apertures 13 to engage the studs of a. span wrench by which means the collar may be removed and properly tensioned. 13 is a roller rotatably mounted on a spindle concentricto the gear G, the said gear and roller are adapted to operate the vreciprocations of a rectilinear gear, functioning as a pitman for an oil well walking beam, the rack 13 of said gear having a guide bar 13 paralleling the sides andends thereof, the said roller and gear engaging between said rack and guide bar, the gear being held in mesh with the rack by the roller engaging with the bar, the collar 12 being greater in diameter than the roller 3' functions as a flange to guide the bar obviating disengagement of said roller and gear (the pitman is not shown in the draw- The saidspindle has a receptacle 15, functioning as an oil chamber. 16 are apertures functioning as oil feeds for the roller. 17 is hard oil valve to which. a hard oiling may be attached for injeetihg on. the

bearings. 1'8 is an aperture to which is connected an oil feed pipe 19, said pipe extends ing near the'peripheral interior of the oil receptacle 5, 20 is an oil pipe connecting with an aperture 21, functioning as an oiler for the teeth of the gear, theend of which is positioned in like manner as that of pipe 19, and it is also understood that the end of these ipes as at C are bent so that by rotation of the shaft, the tumbling of the oil will be incline-d to force its way into the ends thereof, lubricating the parts to which they connect, and the ends G being positioned as they are, is a protection against the receptacle being drained of oil should the aperture 21 be stationarily stopped onthe downward side when the revolutionsof the shaft have ceased. 22 is a key, one edge ef which is curved as at 28. 24 is a lock memher being made of a bar of metal and adapted to; engage in a groove 25 on the back-of said key, one end of the lock member will bebent over the large end of the key, and the opposite end will be bent engaging on the side of the bracket, this will prevent the key from working out. 26 is a reduced drawing of the plate, h aving legs 27, spaced sufficient- 1y to pass on each side of the crank shaft 28, which is shown by dotted lines in Figs. 2 and 4s. 29'are bolt holes, adapted to register with bolt holes'B, and it will be understood that two of these plates are required, and when applied, they will engage on each other with the legged ends reversed, the position of which is shown by 30 in 2. 31 are the bolts functioning as binding means.

When I apply this mechanism to a crank shaft, (all parts being assembled), I place the block on the face of the crank, and then insert the bolts through the holes 7 and 8, which register the pin holes in the crank. I then tighten the bolts sufficiently to hold the biock in place, and with one type crank, the thickness is similar to that shown by dotted line 32, then I drive wedges which centers the gear with the axis of the shaft, and it will be readily seen that the distance between the hooks D of the brackets 4 must be equal to or greater than the diameter of the end of the crank tonvhich it is and as the said key is driven in, the edge bearing against the shoulder F, of the hook D, and the curvature 23 on the edge of the key hooking over the back edge of the crank is the means for binding said crank and block firmly together. When the crank is of great er thickness, being equal to that shown by dotted lines 33, I then bind the block and crank firmly together at the axis of the shaft by applying the plates 26 as heretofore described, and inserting the bolts 31, drawing the parts firmly together and if found neces sary, the wedges may likewise be driven to overcome a lateral motioni 7 Such modifications may be employed as lies within the scope of the appended claims, and having thus described my invention, what I claim as new and desire secure by Letters Patent is: a T

1: In a gearing for oil well rigs, a block, a leg, and brackets integral therewith, oiling means housed by said block, a roller rotatably mounted on said block, means for eonnecting said leg and brackets to the crank of an oil well rig shaft, all substantially as shown. i

2. In a gearing for oil well rigs, a block having a gear and roller mounted thereon, an oil receptacle in said block, brackets on the diametrical axis of the gear, and integral with said block, the leg of said block being bolted to the crank, and the opposite end of the block being wedged to the crank, means for dispensing oil to the gear and roller, and means for injecting oil into the receptacle:

3. In a gearing for oil well rigs, a crank, a block positioned on the face of the crank, a gear mounted on the block, straps transverse- 1y vositioned on the back of the crank, bolts connecting both ends of the straps to the block on the opposite side as binding means therefor to the crank substantially shown. 4. In a gear for oil well rigs of the kind described, a gear and a roller, a block, said block supporting said gear and roller, brackets and wedges, and means for holding said wedges when placed, the brackets in conjunction with said wedges functioning as a binding and centering means so that the said block and gear mounted thereon are bound firmiy in axial alignment with the shaft substantially as shown, and described.

IVILLIAM F. RESCHKE. 

